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405 E 18th St, Antioch, CA 94509 Property Records

Contra Costa County property record for 405 E 18th St, Antioch, CA 94509 · Last verified July 2026

Property Highlights

Property TypeCommercial > Office > Medical Building
Year BuiltBuilt 1995
Square Footage1,360 sqft Gross Area
Lot Size5,083 sqft (0.117 acres)
Garage1,800 sqft
Last Sale$375,000 (2020)
Tax Bill$5,215.00 (2025)

Property Details

APN / Parcel Number

Primary APN065-151-045-5
Alternative APN
  • 065-151-045

Interior

Building Area1,360 sqft Gross Area
1st Floor1,360 sqft 1st Floor
Stories1 Stories

Exterior

Year BuiltBuilt 1994
Effective Year BuiltEffective 1995
Exterior MaterialWood Exterior
Construction TypeFrame Construction
Roof ConstructionGable Roof Construction
Roof MaterialWood Shingle Roof
Lot Area5,083 sqft (0.117 acres)
Depth X Width92 ft x 55 ft Depth x Width
Garage Area1,800 sqft Garage

Utilities and HVAC

Cooling SystemHVAC Cooling
Heating SystemHVAC Heating

Location & Zoning

Street Address405 E 18TH ST
CityANTIOCH
StateCA
Zip94509-2434
Property UsageCommercial Property Usage
TypeCommercial > Office > Medical Building
Legal DescriptionPOR SEC 19 T2N R2E
Legal Range02E
Legal Township02N
Legal Section19
JurisdictionCONTRA COSTA CA
Minor Civil DivisionANTIOCH-PITTSBURG
Census Blockgroup1
Census Block1017
Census Tract306003

Owner

Source: Contra Costa County records · APN 065-151-045-5

Assessment roll updated July 14, 2026 · Last verified July 2026

Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.

Owner of RecordCompany Name on File
Mailing Address405 E 18TH ST, ANTIOCH, CA 94509-2434
Owner TypeOwner is a Company

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed NamesVerified Name on Deed
Last SaleNov 30, 2020 · Amount on Record
Deed SaleNov 30, 2020 · Amount on Record
Deed Doc Number2020290674
Prior Transfer DateNov 27, 2001
Prior Transfer Doc0000374040
Record RefreshedSep 20, 2026

November 2020: Grant Deed, Transfer

Document TypeGrant Deed
JurisdictionCONTRA COSTA CA
Recording DateNov 30, 2020
Property Address405 E 18TH ST, ANTIOCH, CA 94509-2434
Document Number0000290674
Instrument DateOct 23, 2020
Instrument2020-290674
Transaction TypeTransfer
Record UpdatedNov 03, 2022
Title CompanyOLD REPUBLIC TITLE COMPANY

Transaction

AmountAmount Recorded
DownpaymentDownpayment on File
Loan-to-Value (LTV)LTV on Record
Tax$0.00
Amount AccuracyRounded Values by County
Additional
  • Arms Length Transaction

Transferred From (Grantor/Seller)

NameVerified Name

Transferred To (Grantee/Buyer)

NameVerified Name
Address405 E 18TH ST, ANTIOCH, CA 94509-2434

Mortgage

Document Number0000290675
DateNov 30, 2020
Instrument2020-290675
Lender
NameBANK OF THE WEST
TypeBank
Agreement
TypeStand Alone First Mortgage
AmountAmount Recorded

Tax Assessment & Valuation

Source: Contra Costa County records · Assessment roll updated July 14, 2026 · Last verified July 2026

Property Jurisdictions

TypeName
StateCalifornia
CountyContra Costa County
MunicipalityAntioch City
Unified School DistrictAntioch Unified School District (KG - 12)

Tax Bill & Assessment History

Assessed value is set for property tax purposes and is not a market price estimate.

YearTax BillAssessed Value
2026$414,027 (+2%) Land $88,324 Building $325,703
2025$5,215.00 (+6.21%)$405,910 (+4.04%) Land $86,593 Building $319,317
2023$4,910.00 (-7.69%)$390,150 Land $83,232 Building $306,918
2022$5,319.00

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